o_19mgorv9t13a3ko71fev19l81mqa.pdf

using System.Web.Mvc;
using MvcModels.Models;
namespace MvcModels.Controllers {
public class HomeController : Controller {
// ... other methods and statements omitted for brevity ...
}
}
public ActionResult Names(string[] names) {
names = names ?? new string[0];
return View(names);
}
The Names action method takes a string array parameter called names. The model binder will look for any data item
that is called names and create an array that contains those values.
Tip Notice that I have to check to see if the parameter is null in the action method for this example. You can only use
constant or literal values as defaults for parameters.
In Listing 24-22, you can see the /Views/Home/Names.cshtml view file, which I created to show array binding.
Listing 24-22. The Contents of the Names.cshtml File
@model string[]
@{
ViewBag.Title = "Names";
Layout = "∼/Views/Shared/_Layout.cshtml";
}
Names
@if (Model.Length == 0) {
using(Html.BeginForm()) {
for (int i = 0; i < 3; i++) {
@(i + 1):@Html.TextBox("names")
}
Submit
}
} else {
foreach (string str in Model) {
@str
}
@Html.ActionLink("Back", "Names");
}
This view displays different content based on the number of items there are in the view model. If there are no items, then I
display a form that contains three identical input elements, like this:
...
1:
2:
3:
648